SNG's to build a bankroll

Ok, so I have no money. By "no money," I mean my bankroll is about $100 to $150 right now. I've tried to start building it on partypoker but the games are too big...the smallest they have is .50/1, so i'll have a good week and then lose two straight days at $25 a pop and lose 1/4 of my bankroll...while on PP, i've noticed that I've had a much better winning percentage in terms of $/hr if i play 4 $5 SNG's at once. Has this plan been tried by anyone? Sound results? What are your thoughts on this method to build my bankroll? Thanks.